Search results
1 – 2 of 2Ehsan Mohsin Alhamdawee, Nashiren Farzilah Binti Mailah, Mohd Amran Mohd Radzi, Suhaidi Bin Shafie, Shahrooz Hajighorbani and Ahmed Qasim Turki
This work aims to overcome the drawbacks of the nonlinear characteristics of the photo-voltaic (PV) system which are affected by the atmospheric variations.
Abstract
Purpose
This work aims to overcome the drawbacks of the nonlinear characteristics of the photo-voltaic (PV) system which are affected by the atmospheric variations.
Design/methodology/approach
As a result, the optimum power point on these characteristics accordingly changes and the efficiency of photovoltaic systems reduces. Maximum power point tracking (MPPT) algorithms track this optimum point and enhance the efficiency despite the irradiance and temperature changes.
Findings
The conventional perturbation and observation (P&O) algorithm uses fixed step sizes to increment and decrement the duty ratio that leads to slow response time and continuous oscillation around the MPP at steady state conditions. The paper proposes a fuzzy logic-based controller that overcomes the drawbacks of P&O algorithm in term of response time and the oscillation.
Originality/value
MATLAB/Simulink environment was used to model and simulate the KC200GT PV module, direct current (DC)-DC boost converter and the MPPT algorithms.
Details
Keywords
Shahrooz Hajighorbani, Mohd Amran Mohd Radzi, Mohd Zainal Abidin Ab Kadir and Suhaidi Bin Shafie
The purpose of this study is to show in power-voltage curve, a unique maximum power point (MPP) is existed which has the maximum power.
Abstract
Purpose
The purpose of this study is to show in power-voltage curve, a unique maximum power point (MPP) is existed which has the maximum power.
Design/methodology/approach
This paper presents a MPP tracker algorithm for a standalone system includes DC-DC buck converter and battery storage.
Findings
By using this algorithm, the maximum available power is achieved and simultaneously, the battery is charged and also protected against overcharge and discharge. The operation of the proposed algorithm is evaluated in with Proteus software to be sure that it can be implemented in microcontroller in reality.
Originality/value
The simulations results show that the proposed algorithm is able to detect the MPP under different irradiations. Moreover, the battery is charged during the day by PV and protected against overcharge and discharge.
Details